Surgical shadowless lamp is an important equipment used for lighting indispensable surgical site, LED shadowless lamp is required to best observe in different depth, size, low contrast objects and the cavity of the incision. Therefore, in addition to the "shadowless" outside, still need illumination uniformity, good light color, it can easily distinguish blood and other body tissues and organs. In addition, it can continue LED shadowless lamp work for a long time, and does not emit excess heat, because of overheating will cause the operation of discomfort, also can make in the surgical area in dry tissue.